Systems Administrator (Senior-Level)

SmartRecruiters, Inc.; Northern (KY); Hybrid; USD 90,000 - 140,000; Full time

Benefits offered by this job

Paid holidays

Paid time off

Medical

Dental

Vision

Life insurance

Relocation reimbursement

Job summary

Link Solutions, Inc. seeks a Senior Systems Administrator to join our команда at Fort Huachuca, AZ. The role focuses on supporting USAISEC’s CSD with Windows and Linux servers, AD, virtualization, and network infrastructure in both classified and unclassified environments.

You will implement RMF controls, conduct vulnerability assessments, and ensure readiness for security operations while delivering Tier II/III support and documentation across enterprise systems.

Qualifications

• Active DoD Top Secret Clearance required.
• Ten (10+) years of experience administering, maintaining, and supporting enterprise IT systems including Windows/Linux servers and networks.
• IAT Level II Certification or higher per DoD 8570/8140 with a second certification in a related discipline.
• Experience with VMware vSphere/ESXi, Active Directory, and network management in enterprise environments.

Responsibilities

• Administer, maintain, and support Windows, Linux/UNIX, and Active Directory server environments for high availability, performance, and security.
• Install, patch, upgrade, and sustain OSes, applications, and services per government and organizational requirements.
• Monitor performance, troubleshoot issues across classified and unclassified environments, and provide Tier II/III support.
• Manage user accounts, permissions, and privileged access; enforce cybersecurity and access controls.
• Support network infrastructure including routers, switches, firewalls, and cabling; maintain documentation and topology maps.
• Implement RMF requirements, manage security controls, conduct vulnerability assessments, and maintain ATO documentation.
• Coordinate with vendors and Government stakeholders for issue resolution and maintenance activities.
• Prepare technical briefings and reports for leadership and governance boards.

Skills

DoD Top Secret Clearance

IAT Level II Certification

Windows Server

Linux/UNIX

VMware vSphere/ESXi

Active Directory

Network Administration

Education

Bachelor's degree in Computer Science / Information Technology

Tools

VMware vSphere/ESXi

Windows Server

Active Directory

Group Policy

Job description

Link Solutions, Inc. delivers reliable and effective Information Technology services to government clients in support of critical mission needs. Delivering a broad range of Infrastructure Operations, Application Development, Cybersecurity, Virtualization, Cloud and Mobility services.

If you’re looking for a technology company that values innovation, with a vision toward the future of the technology landscape, look no further than Link Solutions! Link is quality and compliance-focused, under our guiding philosophy, “Mission First, Customer Always".

We are certified in ISO 9001:2015, ISO 20000-1:2018, and ISO 27001:2022; CMMC Level 2 certified; and appraised at CMMI Maturity Level 3 for Services and Development.

Job Description

Link Solutions is seeking aSystems Administrator (Senior-Level)to join our team in Fort Huachuca, AZ.

• Active DoD Top Secret Clearance required
• IAT Level II Certification equivalent or higher

The Systems Administrator will support the U.S. Army Information Systems Engineering Command (USAISEC), Communications Security Directorate (CSD), by administering and sustaining mission-critical enterprise infrastructure supporting secure communications and national defense operations. This position provides senior-level support across Windows and Linux server environments, virtualization platforms, Active Directory services, network infrastructure, and cybersecurity compliance activities in classified and unclassified environments.

Join our dynamic team at a top-tier organization, where work-life balance and employee well-being take center stage. This exciting opportunity lets you contribute to cutting-edge projects while safeguarding our national security.

Job Responsibilities:

• Administer, maintain, and support physical and virtual Windows, Linux/UNIX, and Active Directory server environments to ensure system availability, performance, and security.
• Install, configure, patch, upgrade, and sustain operating systems, applications, and enterprise services in accordance with Government and organizational requirements.
• Monitor system and network performance; troubleshoot and resolve hardware, software, connectivity, and operational issues across classified and unclassified environments.
• Provide Tier II/III technical support for end users, including workstation deployment, peripheral support, user account administration, and technical training.
• Manage user accounts, permissions, privileged access, and authentication services while enforcing cybersecurity and access control policies.
• Administer and support network infrastructure, including routers, switches, firewalls, encryptors, LAN/WAN connectivity, and copper/fiber cabling systems.
• Maintain network documentation, configurations, and port assignments while monitoring uptime, traffic, and overall network health.
• Support cybersecurity operations by implementing RMF requirements, managing security controls, conducting vulnerability assessments, supporting continuous monitoring activities, and maintaining ATO compliance documentation.
• Respond to cybersecurity incidents, malware infections, and classified spillage events, including system isolation, evidence preservation, and remediation support.
• Execute and validate backup, recovery, contingency, and disaster recovery procedures to ensure system resilience and operational continuity.
• Coordinate with vendors, Government stakeholders, and support organizations to resolve technical issues, manage support tickets, and oversee warranty and maintenance activities.
• Support system modernization, technology evaluations, lifecycle replacement planning, system testing, and implementation of new technologies and capabilities.
• Prepare and deliver technical briefings, reports, recommendations, and analysis to leadership, stakeholders, and technical governance boards.
• Develop, maintain, and update system documentation, standard operating procedures (SOPs), configuration records, and troubleshooting guides to support operations and rapid onboarding of new personnel.
• Identify and implement process improvements, automation opportunities, and operational efficiencies in support of mission requirements and organizational objectives.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job.

Qualifications

• Active DoD Top Secret Clearance required.
• Ten (10+) years of experience administering, maintaining, and supporting enterprise information technology systems, including Windows and/or Linux server environments, virtualization platforms, Active Directory, and networked infrastructures.
• IAT Level II Certification equivalent or higher per DoD 8570/DoD 8140 (CompTIA Security+ CE, CCNA Security, GICSP, GSEC, SSCP, etc.).
• In addition to the required IAT Level II certification, candidates must possess a second industry-recognized certification in a relevant technical discipline. Acceptable certification areas include systems and network administration, operating systems, server virtualization, videoconferencing technologies, fiber optic cabling, audio/visual systems, network and systems management and control, media access and digital interfaces, Voice over Internet Protocol (VoIP), or system and network protocols.
• Experience administering Microsoft Windows Server environments, Active Directory, Group Policy, and virtualized infrastructure such as VMware vSphere/ESXi.
• Knowledge of network management, monitoring, and troubleshooting for enterprise server and communications environments.
• Ability to install, configure, maintain, and troubleshoot network, server, and communication technologies.

Preferred:

• Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related technical discipline.
• Experience supporting Department of Defense (DoD), Army, DISA, NETCOM, USAISEC, or other federal government environments.
• Experience supporting videoconferencing, VoIP, and audio/visual technologies.
• Familiarity with fiber optic cabling, digital media interfaces, and communications infrastructure.
• VMware Certified Professional (VCP), Microsoft, Cisco CCNA/CCNP, or equivalent industry certifications.
• Experience providing support for mission-critical systems and VIP end users.
• Experience administering VMware vSphere/ESXi, Windows Server, Active Directory, and Group Policy in enterprise environments.
• Excellent written and verbal communication skills.
• Strong organizational skills with attention to detail and the ability to manage multiple priorities.
• Proven problem-solving and troubleshooting skills in complex technical environments.
• Self-motivated with the ability to work independently with minimal supervision.

Candidates must provide proof of certification and maintain all required credentials throughout their employment.

Additional Information

Link Solutions Inc. offers a competitive compensation and benefits package to include

• paid holidays
• paid time off
• medical
• dental
• vision
• company-paid long and short-term disability
• life insurance
• referral bonuses
• relocation reimbursement program
• certification reimbursement program
• retirement
• and more

Link Solutions, Inc. is an EOE. AA/M/F/D/V.We participate in the E-Verify Employment Verification Program.All your information will be kept confidential according to EEO guidelines.